Theresa May sought to unite EU leaders in condemnation of Moscow over the poisoning of a former Russian spy, but she faces resistance from states keen to protect their Kremlin ties

Mr Barnier urged for a "Norway Plus" agreement, insisting that the UK "has to change their lines".

He added: "This is the only frictionless model for the business to avoid controls."

"In all the other cases, they will be compulsory for norms, standards and the very key point, which is rules of origin.”

He declared that the Brexit treaty "is and will be" an agreement approved by EU governments and the European Parliament and that "any agreement on future relations" must be will be a "mixed agreement requiring the ratification by unanimity not only by the EU institutions but by … national parliaments", from the bloc.

He concluded his speech saying even "regional parliaments" should intervene and that "nobody can underestimate the risks”.